Roll map generating device for merge-wound electrode

Patent metadata

Field	Value
Publication number	US-12326331-B2
Application number	US-202218277288-A
Country	US
Kind code	B2
Filing date	Nov 7, 2022
Priority date	Nov 8, 2021
Publication date	Jun 10, 2025
Grant date	Jun 10, 2025

Abstract

An apparatus for generating a roll map of a merge-wound electrode includes a position measurement device configured to acquire coordinate value data for a longitudinal position of a merged-wound electrode, an input device configured to input an input signal indicating a start of merge-winding or an end of merge-winding, a seam detector configured to detect a seam and acquire electrode coordinate values of the seam, and a reference point detector configured to detect reference points of the merge-wound electrode and acquire electrode coordinate values of the reference points. A roll map for simulating the merge-wound electrode is generated based on the input signal of the input device, the electrode coordinate values of the seam, and the electrode coordinate values of the reference points of the merge-wound electrode.

First claim

The invention claimed is:

1. An apparatus for generating a roll map of a merge-wound electrode, the apparatus comprising:
a position measurement device configured to acquire, when the merged-wound electrode moves in a roll-to-roll state between an unwinder and a rewinder, coordinate value data for a longitudinal position of the merged-wound electrode;
an input device configured to input, when two or more electrodes to be merged that are each marked with a plurality of reference points at one or more intervals are connected to be merged and wound into the merge-wound electrode, an input signal indicating a start of merge-winding or an end of merge-winding;
a seam detector configured to detect a seam, which is a connection portion of two electrodes merged in the merge-wound electrode, and to acquire electrode coordinate values of the seam; and
a reference point detector configured to detect a plurality of reference points of the merge-wound electrode corresponding to the plurality of reference points of the two or more electrodes to be merged and to acquire electrode coordinate values of the plurality of reference points of the merge-wound electrode,
wherein a roll map for simulating the merge-wound electrode is generated based on the input signal, the electrode coordinate values of the seam, and the electrode coordinate values of the plurality of reference points of the merge-wound electrode.

2. The apparatus of claim 1 , wherein the position measurement device is a rotary encoder configured to extract an electrode position from an amount of rotation of a motor configured to drive the rewinder.

3. The apparatus of claim 1 , wherein the input device is an automatic or manual input device.

4. The apparatus of claim 3 , wherein the input device is a human machine interface (HMI) control button displayed on a touch screen.

5. The apparatus of claim 1 , wherein the input signal is a splicing operation start or end signal for connecting the electrodes to be merged, which is automatically or manually input.

6. The apparatus of claim 1 , further comprising a roll map generator, wherein the roll map generator is configured to generate the roll map for simulating the merge-wound electrode that includes coordinate value data of the merge-wound electrode, and the plurality of reference points of the merge-wound electrode.

7. The apparatus of claim 6 , wherein the roll map generator is configured to communicate with a display unit in which the roll map for simulating the merge-wound electrode is displayed.

8. The apparatus of claim 6 , further comprising a controller configured to control a movement of the electrode between the unwinder and the rewinder,
wherein the controller is connected to the input device, the position measurement device, the seam detector, and the reference point detector to transmit the input signal of the input device, the coordinate value data about the longitudinal position of the electrode, the electrode coordinate values of the seam, and coordinate value data of the plurality of reference points of the merge-wound electrode to the roll map generator.

9. The apparatus of claim 6 , wherein the roll map generator is configured to compare coordinate values of the plurality of reference points of the merge-wound electrode detected by the reference point detector with the one or more intervals between the plurality of reference points marked on the two or more electrodes to be merged to calculate a change amount of an electrode length during merge-winding and to utilize the change amount to correct the longitudinal coordinate values of the electrode on the roll map and display the corrected longitudinal coordinate values on the roll map.

10. The apparatus of claim 9 , wherein the two or more electrodes to be merged are each marked with the plurality of reference points; and
wherein the coordinate values of the plurality of reference points of the merge-wound electrodes derived from each of the two or more electrodes to be merged are compared with the one or more intervals between the plurality of reference points of each of the two or more electrodes to be merged to calculate the change amount of the electrode length during merging and winding of the two or more electrodes to be merged.

11. The apparatus of claim 10 , wherein the coordinate values of the plurality of reference points of the merge-wound electrode derived from each of the two or more electrodes to be merged are compared with the one or more intervals between the plurality of reference points of each of the two or more electrodes to be merged and the electrode coordinate values of the seam acquired by the seam detector to calculate the change amount of the electrode length during merging and winding of the two or more electrodes to be merged.

12. The apparatus of claim 10 , wherein a length of each of the one or more intervals between the plurality of reference points of each of the two or more electrodes to be merged are the same.

13. A method of generating a roll map of a merge-wound electrode by an apparatus, the method comprising:
acquiring, when the merged-wound electrode moves in a roll-to-roll state between an unwinder and a rewinder, coordinate value data for a longitudinal position of the merged-wound;
receiving an input signal indicating a start of merge-winding or an end of merge-winding, when two or more electrodes to be merged that are each marked with a plurality of reference points at one or more intervals are connected to be merged and wound into the merge-wound electrode;
acquiring electrode coordinate values of a seam, which is a connection portion of two electrodes merged in the merge-wound electrode, when the seam is detected; and
acquiring electrode coordinate values of a plurality of reference points of the merge-wound electrode, which corresponds to the plurality of reference points of the two or more electrodes to be merged, when the plurality of reference points of the merge-wound electrode are detected,
wherein a roll map for simulating the merge-wound electrode is generated based on the input signal, the electrode coordinate values of the seam, and the electrode coordinate values of the plurality of reference points of the merge-wound electrode.

14. The method of claim 13 , wherein the input signal is a splicing operation start or end signal for connecting the electrodes to be merged, which is automatically or manually input.

15. The method of claim 13 , further comprises generating the roll map for simulating the merge-wound electrode that includes coordinate value data of the merge-wound electrode, and the plurality of reference points of the merge-wound electrode.

16. The method of claim 15 , further comprises communicating with a display unit in which the roll map for simulating the merge-wound electrode is displayed.

17. The method of claim 15 , further comprises comparing coordinate values of the plurality of reference points of the merge-wound electrode detected with one or more intervals between the plurality of reference points marked on the two or more electrodes to be merged to calculate a change amount of an electrode length during merge-winding and to utilize the change amount to correct the longitudinal coordinate values of the electrode on the roll map.

18. The method of claim 17 , wherein the two or more electrodes to be merged are each marked with the plurality of reference points, the method comprises comparing the coordinate values of the plurality of reference points of the merge-wound electrodes derived from each of the two or more electro

Assignees

• Lg Energy Solution Ltd

Inventors

• Lee Dong Yeop
• Park Jong Seok
• Su Jun Hyo
• Han Ki Deok
• Han Byoung Eun
• Huh Seung
• Park Su Wan
• Jeon Gi Yeong
• Lee Jae Hwan
• Kim Min Su

Classifications

• H01M10/0409

  for cells with wound electrodes · CPC title

• B65H2701/19

  Specific article or web · CPC title

• B65H2553/80

  Arangement of the sensing means · CPC title

• G01N2021/888

  Marking defects · CPC title

• G01N2021/8887

  based on image processing techniques · CPC title